Eur. Phys. J. A (2016) 52: 339
https://doi.org/10.1140/epja/i2016-16339-y

Regular Article - Experimental Physics

Determination of flux-weighted average cross-sections of ^natPb(,xn), ²⁰⁸Pb(,xn), and ²⁰⁹Bi(,xn) reactions using bremsstrahlung end-point energies of 50-70 MeV

¹ Radiochemistry Division, Bhabha Atomic Research Centre, 400085, Mumbai, India
² Department of Physics and Center for High Energy Physics, Kyungpook National University, 41566, Daegu, Korea
³ Research Center, Dongnam Institute of Radiological and Medical Science, 46033, Busan, Korea
⁴ Division of Advanced Nuclear Engineering, Pohang University of Science and Technology, 37673, Pohang, Korea

^* e-mail: gnkim@knu.ac.kr

Received: 5 May 2016
Accepted: 21 October 2016
Published online: 22 November 2016

Abstract

The flux-weighted average cross-sections of the ^natPb(,xn)^198-204Pb reaction for the bremsstrahlung end-point energies of 50-70MeV were determined by activation and off-line -ray spectrometric technique, using the 100 MeV electron linac at the Pohang Accelerator Laboratory (PAL), Korea. The relative cross-sections of the ²⁰⁸Pb(,xn)^202-204Pb and ²⁰⁹Bi(,xn)^203-206Bi reactions from our earlier work were updated to absolute values and compared with the present data. The photo-neutron cross-sections of ^natPb, ²⁰⁸Pb, and ²⁰⁹Bi were also calculated, as a function of the photon energy using the TALYS 1.6 code. The flux-weighted average cross-sections were obtained from the theoretical values of the TALYS 1.6 code, based on mono-energetic photons, and compared with the present experimental data. The values were found to be in good agreement with the present data for the ²⁰⁹Bi(,xn)^203-206Bi, ²⁰⁸Pb(,xn)^202-204Pb, and ^natPb(,xn)^198-202Pb reactions. However, the present data for the ^natPb(,xn)^{203, 204}Pb reactions were higher than the flux-weighted values obtained using the TALYS 1.6 code.